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Anti-theft bolt

An anti-theft bolt and screw technology, applied in the direction of bolts, nuts, threaded fasteners, etc., can solve the problem of no anti-theft function.

Inactive Publication Date: 2018-09-18
FUJIAN JINZHUAN INTPROP SERVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, this kind of screw has only self-locking function, but no anti-theft function

Method used

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Examples

Experimental program
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Embodiment

[0032] Example: as Figure 1-6 As shown, an anti-theft bolt is designed and manufactured, including a screw rod 1 and a nut 13. The left end of the screw rod 1 is provided with an integrally formed screwing head 25, and the nut 13 is coupled to the screw rod 1 through a threaded hole 18 on its axis.

[0033] A spring washer is sleeved on the screw 1 on the left side of the nut 13 .

[0034] The screwing head 25 has an outer hexagonal structure.

[0035] The main feature of the present invention is that the upper and lower ends of the screw 1 are respectively provided with corresponding locking grooves 19, and the right end of the locking groove 19 is in an open state.

[0036] The left end of the nut 13 is set as an annular boss 2 , the outer diameter end of the annular boss 2 is provided with integrally formed and uniformly distributed serrations 3 , and the direction of the tooth tips is set in a counterclockwise direction.

[0037] A locking block 22 is sleeved on the scr...

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PUM

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Abstract

The invention discloses an anti-theft bolt. The anti-theft bolt comprises a threaded rod, a nut and a locking block. Corresponding locking grooves are formed in the upper end and the lower end of thethreaded rod. Sawteeth which are uniformly distributed are arranged on the periphery of the outer diameter end of an annular boss, and the direction of tooth tops is set to be the counterclockwise direction. A matched circular baffle is arranged in a small circular concave hole, welded and fixed. A compression spring is arranged on the top of a cylinder. The shape of the side face of a locking portion is set to be an inverted right trapezoid. When the nut is rotated in the clockwise direction, the sawteeth on the annular boss enable the compression spring to upwards retract, and the inclined plane of the locking portion smoothly slides on the inclined planes of the sawteeth on the annular boss; and after the nut is screwed down, the vertical surface of the locking portion downwards abuts against the tooth tops of the sawteeth under the action of the elastic force of the compression spring, and the nut is prevented from rotating in the counterclockwise direction. The anti-theft bolt hasan anti-theft function when the anti-theft bolt is used in the installation process of a transformer, the situation that the nut cannot be disassembled from the threaded rod can be guaranteed, the transformer is prevented from being stolen, and the heavy loss of the property is avoided.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to an anti-theft bolt. Background technique [0002] It is well known that ordinary bolts generally do not have a self-locking function, and can basically meet the requirements of use in general occasions. However, most of the transformers are installed outdoors, and some transformers are even installed in the wilderness without any care. The transformers fixed with existing bolts are often stolen, resulting in heavy property losses. There is an urgent need in the market for a bolt that cannot be easily unscrewed after being tightened, so as to prevent the transformer from being stolen and cause heavy property damage. [0003] On July 9, 2018, the applicant submitted a patent application called "An Improved Anti-Shock Self-Locking Bolt". The utility model patent application number is 201821075586.8, and the invention patent application number applied for on the same day is 20181...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B41/00
CPCF16B41/005
Inventor 罗福仲
Owner FUJIAN JINZHUAN INTPROP SERVICES CO LTD
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